Frick S L, Sims S H
Department of Orthopaedic Surgery, Carolinas Medical Center, Charlotte, North Carolina 28232, USA.
J Orthop Trauma. 1995;9(5):388-91. doi: 10.1097/00005131-199505000-00005.
Recent articles and textbooks of orthopaedic traumatology recommend routine computed tomography (CT) scans after successful reduction of simple posterior hip dislocations. This is based on the belief that CT, even in cases with concentric reductions, may identify fractures or intraarticular loose bodies not apparent on standard radiographs. This study was conducted to assess the usefulness of CT after concentric reduction of simple posterior hip dislocations. The hospital database was searched for all traumatic hip dislocations in the past 4 years. Charts and radiographs were reviewed, and only patients with simple posterior hip dislocations (no acetabular or femoral head fractures) and a concentric reduction identified on plain radiographs were included. Twenty-three patients who met these criteria and had subsequent CT scans to evaluate the hip joint were identified. CT scans confirmed the concentric reduction in all patients. Three small occult fractures were identified, and no occult intraarticular loose bodies were found. CT findings did not alter the treatment plan for any of the patients studied. In this small group of patients, CT scanning was not useful after concentric reduction by plain radiography of simple posterior hip dislocations.
近期的骨科创伤学文章和教科书建议，对于单纯性后髋关节脱位成功复位后应常规进行计算机断层扫描（CT）。这是基于这样一种观点，即CT即使在同心圆复位的情况下，也可能发现标准X线片上不明显的骨折或关节内游离体。本研究旨在评估单纯性后髋关节脱位同心圆复位后CT的效用。检索医院数据库中过去4年所有创伤性髋关节脱位病例。查阅病历和X线片，仅纳入单纯性后髋关节脱位（无髋臼或股骨头骨折）且X线平片显示同心圆复位的患者。确定了23例符合这些标准并随后进行CT扫描以评估髋关节的患者。CT扫描证实所有患者均为同心圆复位。发现3处小的隐匿性骨折，未发现隐匿性关节内游离体。CT检查结果未改变任何研究患者的治疗方案。在这一小群患者中，单纯性后髋关节脱位经X线平片同心圆复位后，CT扫描并无用处。
